Integrated shredding unit with multi-stage shredding mechanism

Abstract

This utility model relates to the field of shredders. An integrated shredding device with a multi-stage shredding mechanism includes a frame. A primary shredding mechanism is located at the top of the frame, and a secondary shredding mechanism is located at the bottom. The primary shredding mechanism includes a primary shredding box and multiple rotatable primary shredding blades and multiple fixed primary shredding blades within the box. The primary shredding box has a primary feed inlet at the top and a primary discharge outlet at the bottom. The secondary shredding mechanism includes a secondary shredding box and multiple rotatable secondary shredding blades within it. The secondary shredding box has a secondary feed inlet at the top and a secondary discharge outlet at the bottom. This utility model integrates the primary and secondary shredding mechanisms, arranged closely together, resulting in a compact structure and small footprint. It enables two-stage shredding of materials, is flexible in use, and can be used in conjunction with a box truck or stationary in a specific location.

Description

Technical Field

[0001] This utility model relates to the field of shredder technology, specifically to an integrated shredding device with a multi-stage shredding mechanism. Background Technology

[0002] A shredder is a machine used for fine shredding, generally for processing unprocessed raw materials or scraps to make them smaller. A representative example is shredding plastic or rubber scraps, melting them down, and then granulating them to remanufacture plastic bottles, tires, or trash cans. Shredders are used in the plastic recycling industry, often for crushing large-diameter PE plastic pipes, stacks of plastic sheets, and machine head stock. For example, the invention patent CN118925921A discloses a shredder control system, including a frame with a shredding box mounted on it. A feed hopper is installed at the top of the shredding box, and two cooperating shredding blades are installed inside. A first shredding motor and a second shredding motor are respectively located on both sides of the frame to drive the two shredding blades. A discharge port is located at the bottom of the shredding box. This type of shredder used on the ground is generally a single-stage shredder. For scenarios requiring finer output, the initially shredded material at the discharge port needs to be conveyed to another shredding device, resulting in a complex overall structure and a large footprint. Utility model patent CN 205253300U discloses a vehicle-mounted crusher. In use, the vehicle equipped with the crusher is driven to the material to be crushed. The feed conveyor belt placed on the truck bed is removed, one end is connected to the feed inlet, and the other end is placed on the ground. The material to be crushed is placed on the ground end of the feed conveyor belt, which then transports the material to the crushing chamber. After being crushed in the crushing chamber, the material falls from the discharge outlet onto the discharge conveyor belt, and then further down to the stockpile at the rear of the truck bed. This vehicle-mounted crusher is also equipped with a single-stage crushing mechanism. Utility Model Content

[0003] The purpose of this invention is to provide an integrated shredding device with a multi-stage shredding mechanism. The multi-stage shredding mechanism is integrated into one unit, resulting in a compact structure and convenient use.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An integrated shredding device with a multi-stage shredding mechanism includes a frame, a primary shredding mechanism on the upper part of the frame, and a secondary shredding mechanism on the lower part of the frame. The primary shredding mechanism includes a primary shredding box and multiple rotatable primary shredding moving blades located in the primary shredding box, and multiple primary shredding fixed blades fixed in the primary shredding box. The primary shredding box has a primary feed inlet at the upper part and a primary discharge outlet at the lower part.

[0006] The secondary shredding mechanism includes a secondary shredding box and multiple rotatable secondary shredding blades located in the secondary shredding box. The upper part of the secondary shredding box is provided with a secondary feed inlet, and the lower part is provided with a secondary discharge outlet.

[0007] Furthermore, the primary shredding moving blades are divided into two groups, defined as the first shredding moving blade and the second shredding moving blade, and the primary shredding fixed blades are divided into two groups, defined as the first shredding fixed blade and the second shredding fixed blade, with the first shredding moving blade and the second shredding moving blade respectively mounted on the first shredding blade shaft and the second shredding blade shaft.

[0008] Furthermore, the first shredding blade shaft and the second shredding blade shaft are arranged in parallel, and the first shredding moving blade and the second shredding moving blade are arranged alternately in sequence.

[0009] Furthermore, the secondary shredding blade includes a blade holder, on which a secondary moving blade is detachably connected.

[0010] Furthermore, the secondary moving blade is pressed onto the tool holder by a pressure plate, and a positioning groove is provided on the side of the secondary moving blade opposite to the pressure plate. A positioning pin is provided on the blade mounting surface of the tool holder, and the positioning pin is located in the positioning groove.

[0011] Furthermore, the positioning groove is an elongated groove.

[0012] Furthermore, the tool holder has a triangular structure, and each of the three tops of the tool holder is connected to a secondary moving blade.

[0013] Furthermore, multiple secondary shredding blades are staggered in sequence along the axial direction of the secondary blade shaft.

[0014] Furthermore, the secondary discharge port is formed by the mesh of a screen, with one side of the screen hinged to the secondary shredding box and the other side connected to the secondary shredding box via a quick-release structure.

[0015] Furthermore, the quick-release structure includes a locking handwheel, one end of which extends into the secondary shredding chamber and supports the other side of the screen.

[0016] The beneficial effects of this utility model are:

[0017] (1) This utility model integrates the primary and secondary shredding mechanisms, which are arranged closely together, resulting in a compact structure and small space occupation. It can achieve two-stage shredding of materials, making the shredded materials smaller in particle size. The integrated shredding device of this utility model can be used in conjunction with a box truck to form a vehicle-mounted shredder, which is flexible in use; it can also be fixed in a certain place for independent use.

[0018] (2) The secondary moving blade is pressed onto the tool holder by the pressure plate. A positioning groove is provided on one side of the secondary moving blade, and a positioning pin is provided on the blade mounting surface of the tool holder. The positioning pin and the positioning groove work together to quickly install the secondary moving blade into place, thereby improving the efficiency of later maintenance.

[0019] (3) One side of the screen is supported by a quick-release structure. The quick-release structure is easy to open. The screen can be removed from the bottom of the shredder without disassembling the secondary shredding blades. The disassembly and assembly are convenient and quick. Attached Figure Description

[0020] Figure 1 This is a perspective view of the integrated shredding device with a multi-stage shredding mechanism according to this utility model;

[0021] Figure 2 This is a partial view of the primary shredding mechanism;

[0022] Figure 3 This is a partial structural diagram of the two-stage shredding mechanism;

[0023] Figure 4 It is a 3D view of the secondary shredding blades;

[0024] Figure 5 This is a 3D view of the secondary moving blade;

[0025] Figure 6 This is a schematic diagram showing the connection between the screen and the quick-release mechanism.

[0026] 1. Truck platform; 2. Frame; 31. Primary shredder; 32. First motor; 33. Gear; 34. First fixed shredder; 35. First moving shredder; 36. Second moving shredder; 41. Secondary shredder; 42. Second motor; 43. Driven pulley; 44. Screen; 5. Hopper; 6. Secondary moving shredder; 61. Knife holder; 62. Pressure plate; 63. Secondary moving blade; 631. Positioning groove; 632. Through hole; 7. Quick release structure; 71. Locking handwheel; 711. Handwheel; 712. Support; 72. Locking nut. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art are within the protection scope of the present utility model.

[0028] Embodiments of this utility model:

[0029] like Figures 1-6As shown, an integrated shredding device with a multi-stage shredding mechanism includes a frame 2. A primary shredding mechanism is located on the upper part of the frame 2, and a secondary shredding mechanism is located on the lower part of the frame 2. The primary shredding mechanism includes a primary shredding box 31 and multiple rotatable primary shredding blades and multiple fixed primary shredding blades within the primary shredding box 31. The primary shredding box 31 has a primary feed inlet at the upper part and a primary discharge outlet at the lower part. The secondary shredding mechanism includes a secondary shredding box 41 and multiple rotatable secondary shredding blades 6 within the secondary shredding box 41. The secondary shredding box 41 has a secondary feed inlet at the upper part and a secondary discharge outlet at the lower part. The secondary feed inlet is formed by a hopper 5. The material to be shredded enters from the hopper 5, is shredded in the primary stage, and then falls into the secondary shredding box 41 for secondary shredding.

[0030] This invention integrates a primary and secondary shredding mechanism, resulting in a compact structure capable of two-stage shredding and material crushing. This invention focuses on crushing plastic items, such as plastic pallets; however, it can also be used to crush other types of materials in other embodiments.

[0031] The integrated shredding device of this invention is applied to a box truck to form a mobile vehicle-mounted shredder. Figure 1 Only a portion of the truck platform 1 is shown in the diagram. The structure of the box truck is not an improvement of this utility model and will not be described in detail. A foldable conveying mechanism (not shown) is also provided, which can be found in existing technology, such as the utility model patent with authorization announcement number CN 205253300U. In other embodiments, the integrated shredder can also be used in a fixed location, making it more suitable for locations with long-term material crushing needs.

[0032] The specific structural details of the integrated shredding device of this utility model are as follows:

[0033] like Figure 2 As shown, the primary shredding blades are divided into two groups, defined as the first shredding blade 35 and the second shredding blade 36. The primary shredding fixed blades are also divided into two groups, defined as the first shredding fixed blade 34 and the second shredding fixed blade. The first shredding fixed blade 34 and the second shredding fixed blade are located on both sides of the primary shredding box 31, respectively. Multiple first shredding fixed blades 34 are arranged at intervals, and multiple second shredding fixed blades are arranged at intervals, with the intervals allowing the shredding blades to rotate in, achieving the effect of shearing the material.

[0034] The first shredding blade 35 and the second shredding blade 36 are respectively installed on the first shredding blade shaft and the second shredding blade shaft.

[0035] The first and second shredding blade shafts are arranged in parallel. Both the first moving shredder 35 and the second moving shredder 36 are plate-shaped structures with several teeth on their outer periphery. The first moving shredder 35 and the second moving shredder 36 are arranged alternately. The first shredder blade shaft corresponds precisely to the interval between two adjacent first fixed shredder blades 34, and the second shredder blade shaft corresponds precisely to the interval between two adjacent second fixed shredder blades. The first moving shredder 35 and the second moving shredder 36 have the same structure and employ existing cutting tools, such as those disclosed in prior patent publication number CN118925921A.

[0036] The first shredder shaft and the second shredder shaft are each provided with a gear 33 at their ends. The two gears 33 mesh and drive each other. One of the shredder shafts is the drive shaft, which is driven by the first motor 32 and the reducer.

[0037] like Figures 3 to 5 As shown, multiple secondary shredding blades 6 are staggered in sequence along the axial direction of the secondary blade shaft. Each secondary shredding blade 6 includes a blade holder 61, which has a triangular structure. A secondary moving blade 63 is connected to each of the three tops of the blade holder 61. The secondary moving blades 63 are detachably connected to the blade holder 61. In other embodiments, the blade holder may also adopt a rhomboid or rectangular structure.

[0038] The secondary moving blade 63 is pressed onto the tool holder 61 by a pressure plate 62. The pressure plate 62 is connected to the tool holder 61 by screws, which also pass through a through hole 632 on the secondary moving blade 63. A positioning groove 631 is provided on the side of the secondary moving blade 63 opposite to the pressure plate 62. A positioning pin is provided on the blade mounting surface of the tool holder 61, and the positioning pin is located in the positioning groove 631. The positioning groove 631 is an elongated groove. During the installation of the secondary moving blade, the positioning groove 631 serves a positioning function. Guided by the positioning pin, it can be quickly inserted into the predetermined position of the tool holder 61, and then fixed by the pressure plate 62 and screws. Since there are multiple secondary moving blades 63, whether in the initial factory installation stage or in the later maintenance and replacement stage, using secondary moving blades with positioning grooves 631 can achieve quick installation and save time.

[0039] like Figure 3 As shown, one end of the secondary cutter shaft is provided with a driven pulley 43, which is connected to the drive pulley on the motor shaft of the second motor 42 via belt drive.

[0040] like Figure 6As shown, the secondary discharge port is formed by the mesh of screen 44, which has a semi-circular structure with an open top. One side of screen 44 is hinged to the secondary shredding box 41, and the other side is connected to the secondary shredding box 41 via a quick-release structure 7. This quick-release structure 7 allows for rapid disassembly of one side of screen 44, enabling quick opening of screen 44 from the bottom of the equipment for easy maintenance. Compared to the traditional method of disassembling screen 44 only after removing the secondary shredding blades 6 and the secondary blade shaft, this significantly improves efficiency.

[0041] The quick-release structure 7 includes a locking handwheel 71, one end of which extends into the secondary shredding chamber 41 and supports the other side of the screen 44. In this embodiment, three locking handwheels 71 are provided. Each locking handwheel 71 includes a handwheel 711, a threaded section, and a support portion 712. A locking nut 72 is threadedly connected to the outer side of the secondary shredding chamber 41. The threaded section of the locking handwheel 71 is threadedly engaged with the locking nut 72. The end of the support portion 712 of the locking handwheel 71 is tapered and extends into the secondary shredding chamber 41 to support the side of the screen 44. When disassembling the screen 44, the locking handwheel 71 is turned, and the support portion 712 of the locking handwheel 71 gradually disengages from the screen 44. When the screen 44 is no longer supported, it rotates downward around the hinge on the other side to open, allowing for internal cleaning and maintenance. The locking nut 72 can also be welded to the side wall of the secondary shredder, providing a threaded hole that mates with the threaded section of the locking handwheel 71.

[0042] The serial numbers assigned to components in this document, such as "first" and "second," are used solely to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the utility model.

[0043] In utility models, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

Claims

1. An integrated shredding device with a multi-stage shredding mechanism, characterized in that: The machine includes a frame, with a primary shredding mechanism on the upper part of the frame and a secondary shredding mechanism on the lower part of the frame. The primary shredding mechanism includes a primary shredding box and multiple rotatable primary shredding moving blades located in the primary shredding box, and multiple primary shredding fixed blades fixed in the primary shredding box. The primary shredding box has a primary feed inlet at the upper part and a primary discharge outlet at the lower part. The secondary shredding mechanism includes a secondary shredding box and multiple rotatable secondary shredding blades located in the secondary shredding box. The upper part of the secondary shredding box is provided with a secondary feed inlet, and the lower part is provided with a secondary discharge outlet.

2. The integrated shredding device with a multi-stage shredding mechanism according to claim 1, characterized in that: The primary shredding moving blades are divided into two groups, defined as the first shredding moving blade and the second shredding moving blade. The primary shredding fixed blades are also divided into two groups, defined as the first shredding fixed blade and the second shredding fixed blade. The first shredding moving blade and the second shredding moving blade are respectively installed on the first shredding blade shaft and the second shredding blade shaft.

3. The integrated shredding device with a multi-stage shredding mechanism according to claim 2, characterized in that: The first and second shredding blade shafts are arranged in parallel, and the first and second shredding blades are arranged alternately.

4. The integrated shredding device with a multi-stage shredding mechanism according to claim 1, characterized in that: The secondary shredding blade includes a blade holder, on which a secondary moving blade is detachably connected.

5. The integrated shredding device with a multi-stage shredding mechanism according to claim 4, characterized in that: The secondary moving blade is pressed onto the tool holder by a pressure plate. The side of the secondary moving blade opposite to the pressure plate is provided with a positioning groove. The blade mounting surface of the tool holder is provided with a positioning pin, which is located in the positioning groove.

6. The integrated shredding device with a multi-stage shredding mechanism according to claim 5, characterized in that: The positioning groove is a long groove.

7. The integrated shredding device with a multi-stage shredding mechanism according to claim 4, characterized in that: The tool holder has a triangular structure, and a secondary moving blade is connected to each of the three tops of the tool holder.

8. The integrated shredding device with a multi-stage shredding mechanism according to claim 1, characterized in that: Multiple secondary shredding blades are staggered in sequence along the axial direction of the secondary blade shaft.

9. The integrated shredding device with a multi-stage shredding mechanism according to claim 1, characterized in that: The secondary discharge port is formed by the mesh of a screen. One side of the screen is hinged to the secondary shredding box, and the other side is connected to the secondary shredding box through a quick-release structure.

10. The integrated shredding device with a multi-stage shredding mechanism according to claim 9, characterized in that: The quick-release structure includes a locking handwheel, one end of which extends into the secondary shredding chamber and supports the other side of the screen.

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